本文摘自《宝石与宝石学》（1991 年冬季刊），是《宝石与宝石学》外部发表的重要宝石学相关文章的摘要汇编。

A new opal deposit was discovered in 2008 near the village of Wegel Tena, in volcanic rocks of Ethiopia’s Wollo Province.

看看在亚当·桑德勒电影《未切割的切割》中扮演主要角色的粗糙蛋白石。蛋白石的真正宝石学和来源信息是什么？

一支抒情的舞蹈：时而一个大踢腿，大胆闪烁着丰富的色彩，时而是细碎的舞步，闪现出星星点点的光芒。

A first-person account of cutting a 3,019 ct piece of white opal to create a 1,040 ct gem with play-of-color across the surface.

Jürgen Schütz discussed the opal sourcing and cutting activities of the German firm Emil Weis.

Chatoyancy, rarely seen in play-of-color opal, is observed in Ethiopian material.

研究宝石学家 Rebecca Buys（丽贝卡·拜斯）是设计师兼估价师，拥有充实的事业历程，为加利福尼亚州圣地亚哥的 GIA 校友指点机遇。

Documents a trip to the renowned opal fields of Lightning Ridge, Koroit, Yowah, and Quilpie.

就像毛毛虫蜕变成蝴蝶，主要珠宝商将原始元素转化为可佩戴的艺术作品。 抛开对昆虫的一切成见，准备进入另一个世界—— 一个你可能经过无数次，但却从未注意过的世界。

Opal occurs as nodules in volcanic rocks at a new gem opal locality in the Menz Gishe district of Shewa Province, Ethiopia.

After almost 75 years of inactivity, the deposits of boulder opal in Queensland, Australia, began to attract new interest in the 1960s and 1970s.